Examlex
A statistics teacher wants to know how students in her school feel about mathematics courses. She decides to administer a
survey to a random sample of students taking a mathematics course. She has several sampling plans to choose from.
a. There are four ranks of students taking the class: freshmen, sophomores, juniors, and seniors. Randomly select 15 students
from each class rank.
b. Randomly select ten math class sections and survey every student in each of those sections.
c. Each student has a nine-digit student number. Randomly choose 60 different nine-digit numbers and survey the students
that correspond to those numbers.
d. Randomly select a number from 1 to 5. Using the class roster, start at that number, then select every fifth student from the
list after that.
-Name the sampling strategy in each plan.
Federal Act
Legislation enacted by the national government that applies across the entire country.
Substance Abuse
The harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs.
Child Abuse
The physical, sexual, emotional mistreatment, or neglect of a child.
Neglect
Failing to provide adequate care, supervision, or necessary resources for a dependent, resulting in harm or risk of harm.
Q22: Engineers want to know what factors
Q31: Surprised by a high number of customers
Q35: What is the probability that she does
Q37: If the professor only knew the
Q58: Not wanting to risk poor sales for
Q67: What is the marginal distribution of age
Q91: If the teacher in simply surveyed all
Q96: Should the admissions officers conclude that the
Q239: What is the correlation between year and
Q578: The model <span class="ql-formula" data-value="\sqrt